Roll film camera



J. MIHALYI ROLL FILM CAMERA Filed Sept 9, 195a F by 11, 1941.

5 Sheets-Sheet 1 Joseph Mihalyi INVENTOR BY MfKM ATTORNEYS Feb. 11,1941. JIMIHALY] ROLL ;FILM CAMERA Filed Sept. 9, 1958 5 Sheets-Sheet 2Joseph Mlndlyi I'll-I INVENTOR Feb. 11,1541. A| Y| I 2,231,730

ROLL FILM CAMERA Filed Sept. 9, 193a 5 $heets-Sheet 3 w 1 124 122 121 99fiQE .97 3 118 n 64., Q3 10 Q2 127 a BY J Feb. 11, 1941. J. MIHALYI2,231,730

" ROLL FILM CAMERA Filed Sept. 9, 1938 Sheets-Sheet 4 nan. 4 1

0 67 FIG .14 69 64 Jgsph Mihalyi IN VENTOR A 'I'TORNE YS J. MIHALYI2,231,730

.RQLL FILM swam Feb. 11, 1941.

5 Sheets-Sheet 5 Filed Sept. 9, 193a INVENTOR Joseph M ihalyi A TTORNEYS Patented Feb. 11, 1941 UNITED STATES PATENT OFFICE man KodakvCompany,

poration of New Jersey Rochester, N. Y., a cor- Application September 9,1938, Serial Nit 229,151

Claims.

This invention relates to photography, and more particularly to a rollfilm camera so designed that improper operation of the various partsthereof is prevented.

One object of my invention is to provide a camera in which the objectiveis extended from the camera body into a picture-taking position by meansof a plurality of tubular members which may screw into and out of thecamera body. An-' 10 other object of myinvention is to provide a cameraof the type described in which the shutter is totally enclosed in one ofthe tubular extension members. Another object of my invention is toprovide an enclosed shutter including an en- ]5 closed setting lever andan enclosed releasing lever, both of which may be operated by anenclosed shutter actuating member arranged to telescope ,with thetubular members. Still another object of my invention is to provide acamera in which the film winding movement actuates a measuring roll andin which an interlocking lever automatically engages the film windingmechanism with the shutter setting mechanism duringthe winding movement.Still an-. other object of my invention is to provide a pair of gearswhich may be automatically clutched and unciutched during a film windingand shutter setting movement. Still other ob-' Jects of my inventionrelate to interlocking mechanism between the trigger, the film wind andthe shutter actuating member, so that the several parts may only beoperated in the proper relation. A still further object of my inventionis to provide a means for disconnecting the film measuring mechanismduring the initial threading of the film backing paper through thecamera, in order to later position film for exposure. Other objects willappear from the following specification, the novel features beingparticularly pointed out in the claims at the end thereof. I Coming nowto the drawings wherein like reference characters denote likepartsth'roughout:

Fig. l is a top planof a camera constructed in 5 accordance with thisinvention, a part of the upper casing being removed. to show some of theinterlocking mechanism between the film wind and the shutter release,and the shutter being set for exposure.

' 50 Fig. 2 is a rear elevation, partly in section, with the camera backremoved;

Fig. .3 is a plan in section, showing the lens tube construction; Fig. 4is a sectional fragmentary elevation on 85 line 4-4 of Fig. 3;

Fig. 5 is a fragmentary view in perspective showing the focusingmechanism;

Fig.6 is a view similar to Fig. 1, with the parts in the position theywill assume after the shutter has been released;

Fig. 7 is a plan view showing a portion of the film winding mechanismnear the completion of its cycle;

Fig. 8 is a perspective view of the exposure counter operating parts;

' Fig. 9 is an exploded perspective view of some of the parts shown inFig. 7;

Fig. 10 is a vertical section parallel with the focal plane, takenapproximately at the center line of the film spools; I

Fig. 11 is a vertical section, enlarged, on line ll-ll of Fig. 3,showing the rear end of the lens tube and the parts connected with theshutter release; I

Fig. 12 is a perspective view of parts of the in- 20 terlockingmechanism;

Fig. 13 Ba fragmentary elevation of a portion of the shutter-operatingmechanism;

Fig. 14 is a plan in section, on line l4ll of Fig. 11;

Fig. 15 is a vertical central section on the optical axis of the camera,lookingtoward the left in Fig. 11; and

Fig. 16 is a perspective view of the shutter operating tube.

In some of the figures of the drawings some parts have been omitted forthe sake of clearness. However, these'parts are shown in some of thefigures.

The camera as illustrated herewith has neither 35 bellows nor foldingbed member, but is of the type in which a retractile tube carries boththe lens and the shutter, so that these parts may be withdrawn partiallywithin the camera body to reduce the overall dimensions and extended orprojected 40 forwardly for focusing. The body In of the camera .may bemolded, or cast, and is provided with a back ll, hinged at l2, andhaving a latch IS. The back ii forms a closure for film chambers l4 andii for film supply and receiving spools I8 and II respectively. whilewalls II and I! complete these chambers and separate them from theinterior of the body proper.

A separate compartment or housing 20 may be attached to the top wall 2|of the camera to contain and cover some of the interlocking partspreviously mentioned, and may also support and enclose the range-finderelements. the view finder, and other accessories. As some of these formno part of the present invention they are omitted anothera idler 25, tothe receiving spool i1.

from the drawings and need not be further'described.

The film F is drawn from supply spool l5 over an idler roll 22 andacross the exposure aperture frame 23, a ratchet-toother'pair of rolls24, and Both spools are preferably guided while in place by rollers 26and 2l on the back H.

The lens elements 28 are shown as mounted in a conventional manner inthe casing 29 of a between-the-lens shutter designated generally by thenumeral 30. The shutter 30 is preferably of the setting" type, wherein amovement of a part or projecting arm in one direction(circumferentially) sets the shutter for operation, and the movement ofanother projecting arm in the opposite circumferential directionreleases the shutter to make an exposure.

The shutter 30 is mounted in the outer end of a tube 31, on the exteriorof which are cut multiple threads 32. These threads are adapted tofollow and engage similar threads 33 in the inner wall of a larger tube34, the latter also having exterior threads 35 that work in aninteriorly-threaded collar 35, fixed in the front wall of the camera.The threads 32 and 35 are of oppo-' site hand, in the present instancelefthand and right-hand respectively, so that a maximum of linearmovement of the tubes may be had for a given amount of rotation, for thepurpose of focusing the lens elements on the film F at the exposureaperture 23, and also to retract the tubes into the camera.

To accomplish the above-described results. The outer tube 34 isrevoluble in the threaded collar 35, so that a left-hand rotation of thetube 35 (as viewed in Fig. l) retracts it, and a right-hand rotationmoves it outwardly from the camera. The inner tube 3! is held againstrotation by pins 3'5 that project through slots 38 in stationarybrackets 39. These latter are supported at 45 on the aperture frame atthe rear wall of the camera. The above arrangement results in the tube34 having axial movement only and because of the opposite threads thelens 28 moves twice as far along the optical axis for a given rotarymovement of the tube 3 as it would if only one tube were used. Inconsequence, the focusing scale numerals S may be placed closelytogether on the tube 34 (Fig. 1). An index mark M is provided in a notch42 in the collar 38 so that most of the numerals on the scale except theone in the notch are obscured by the collar, thereby reducing the chanceof the operator making an error in reading the scale.

The tube 34 may be rotated for focusing by grasping the knurled rim 43.A more accurate and controlled movement is obtained by turning anexternal knob 44 at the right side of the v camera. The shaft 45 of thisknob carries within the camera a crown-type gear 46 that meshes with apinion 41, and thelatter in turn through a pinion 48 rotates a longpinion 49, supported in brackets 50. The pinion 49 meshes with a ringgear 5| on the inner end of tube 34 and thus rotates the latter as theknob 45 is turned by the operator. The length of the pinion 49 is such-that the ring gear 5| is always meshed therewith regardless of thelinear or rotative position of the tube 34.

Within the tube 3| is a plain tube 52, skeletonized as in Fig. 16, whichmay be designated as the shutter operator. Oppositely-disposedcircumferential slots 53 in this tube coact with 55 on the shutter 30and will set or cook the shutter. When the tube 52 is rotated to theright (clockwise in Fig. ll) the lug 54 will strike the release lever 55of the shutter and the latter is thus tripped to make an exposure. Ifthe focusing tube II has not been carried forward to at least the"infinity position the shutter cannot be tripped because 2. lug 51 onthe rear edge of the shutter operator tube 52 engages a widened portion58 on the lower bracket 39. When lug 51 passes the shoulder 59 the lenshas reached infinity position and then the tube 52 may be rotatedclockwise to trip the shutter. Mechanism for'rotating tube 52 in eitherdirection will now be described.

At the rear end of tube 52, and formed downwardly therefrom is asegmental gear 60 meshing with a rack 5|. The latter is slidable in ways62 and on a guide pin 63 transversely along the bottom wall of thecamera and is of such a length that it is always meshed with thesegmental gear 50 regardless of the position of either of the tubes (Hor 52. Obviously therefore, if rack BI is moved toward the right, tube52 will be rotated counterclockwise (as viewed from the rear) and if therack is moved to the left the tube 52 will be rotated clockwise. Thesemovements respectively set and trip the shutter as previously described.

The means for moving the rack to the right for setting the shutter isinterconnected with the mechanism for advancing the film. Only theportions directly affecting the rack will now be described. A shaft 64,adapted to oscillate in bearings 55 on the upper and lower walls of thecamera, carries a bellcrank 65, one arm of which is connected through alink 61 with a lever 68, pivoted at 89. Lever 58 has a pin-and-slotconnection with rack Bl. If the shaft 64 is rotated clockwise (Fig. 14)the rack will .be pulled to the right, and by reason of gear 60 beingmeshed therewith, the tube 52 will be rotated counterclockwise to setthe shutter by contacting and moving the arm 55 as before described.

The rack 5| is moved to the left, and the tube 52 accordingly rotatedclockwise to release the shutter, by means of the finger release H. Thisrelease extends to a rod 12, guided for vertical movement in a bearing12 and a bracket 14.

.A spring tends to elevate the rod 12 and the finger -release H to thenormal position. 'Pressure on the release ll moves rod 12 downwardly andswings a bellcrank l5, pivoted at TI, and this movement carries a secondbellcrank, II, pivoted to 15 at 15, toward the left, until the toe 50(Fig. 13) of the long arm of bellcrank I8 engages a shoulderfil on rackBI and carries the latter also toward the left and so rotates'the tube52 to trip the shutter, as before described.

From either the set or released position, the

rack 5i and therefore the tube 52 are returned to normal by the actionof a spring 5|, coiled around the hub of bellcra-nk 55. The ends ofspring 8| pres against opposite sides of a pin 82 and 2. lug 83 isturned up from one arm of bellcrank 56 between these spring ends. As thespring is comparatively stiff, its ends react to center the lug 63between them whichever way the lug is moved, and thus return the rack 6|and tube .52 to neutral."

It should be noted that a spring 04, wound about the pivot 11 (Fig. 11)is anchored against bracket 14 and its free end urges bellcrank 10 in acounterclockwise direction about its pivot 19, so that the toe 00' ispositively pressed into engagement with the shoulder 6|". A fixed pin 95limits the downward movement of toe 90 and also causes the latter torise clear of shoulder 6| as indicated by broken lines in Fig. 13, whenthe finger release H is permitted to move up wardly.

The film advancing mechanism and interlocking parts which prevent doubleexposure, will be best understood by reference to Figs. 1, 6, '7, 8, 9and 10. A winding knob 90 on a stub shaft 9i that carries a spool key 92on its inner end is used in the conventional manner to wind the film Fonto the receiving spool I1. The usual roller clutch 93, not detailed,prevents the knob from turning in the reverse direction.

is fixed to theshaft 9I by a key 95. This gear is adapted to mesh with agear 96, pivoted at 91. Some of the teeth of gear 96 are removed,leaving a smooth portion 98 for a purpose presently to be described. Apitman 99 is attachedto gear 96 at I00 and its opposite end has aslot-and-pin connection with a crank arm IOI, fixed on the upper end ofvertical shaft 64 above the top wall 2I of the camera body.

As the winding knob 90 is turned, the gear 96 is rotated from theposition indicated in Fig. 1 to that indicated in Fig. 6, and the pitman99 swings arm IOI toward the rear of the camera and rotates shaft 64 tomove rack H to set the shutter as previously described.

Again,referring to Figs. 9 and 10, above the gear 96 is a ring gear I02.This gear is adapted to be driven by the film F itself when the wind.-ing knob 90 is turned, by reason of the emulsion side of the filmengaging the toothed or serrated rollers 24. These latter dig into theemulsion just enough so that theywill be turned, even againstconsiderable resistance, as the film rolls over them. At the top of theshaft 24" that carries rolls 24 is a pinion I03, meshing with an idlerpinion I04, which in turn meshes with gear I02. Idler pinion I04 issupported in a fiat plate or yoke I05, a stud I06 serving both as apivot for the pinion and an anchor for the plate.

Within the gear I02 is a friction member I01 having a series ofoutwardly-sprung tongues I09 that frictionally engage the innerperiphery of the gear I02. Member I01 is retained between a disc I09that enters a rabbet in the gear I02, and a second disc IIO by means ofscrews III. These three elements (the two discs and the gear I02) arefree to revolve on the stub shaft 9| when driven by pinions I03 and I04.

Means are provided, as previously mentioned,

whereby the film cannot be advanced until the finger release has beendepressed to operate the Above the clutch 93 (Fig. 10) is a gear 94 thatthe release to rise.

shutter and make an exposure, whereupon the finger release cannot againbe depressed until the film has been advanced one frame." Thiscondition'is broughtabout through the movement of a lever II5, which maybe designated the interlock, which is pivoted at II6 on the top wall ofthe camera body I0 and is provided with a slot II1 for limited lateralmovement. An upstanding lug H0 is adapted to engage the notch I I2 indisc H0 and may also drop behind a shoulder I20 on the yoke I if movedfar enough to the right. An arm I2I projects forwardly from theinterlock H5 and is connected through a spring I22with a lever I23pivoted at I 24. This lever has a hooked end I25 underlying gear 96 andin the same plane as a pin I26 that projects downwardly from said gear.On the front of lever H5 is forwardly-projecting edge H9 that is adaptedto be engaged by the rear of arm IOI.

Near the right side of the camera top wall 2i is a lever I21 pivoted atI26 and urged counterclockwise by a spring I29. When the finger releaseis depressed the spring I29 forces the forward end I30 of lever I21'intoa notch I3I (Fig. 4) in the finger release 10, so that the latter islocked against further movement until the lever I 21 is moved in theopposite direction. This movement will occur'when interlock I I5 ismoved a sufiicient distance to the right to cause its end I32 to strikelever I21 and move the portion I30 clear of the notch I3I in part 10(Fig. 1).

The above description makes clear the construction and arrangement ofthe novel features which are designed to prevent double exposure. Theoperation and movements of these members are set forth in the succeedingparagraphs.

Assuming that the parts are in the relation shown in Fig. 1, wherein theshutter is set for an exposure and the film has been advanced, if theoperator presses finger release 10, the bellcranks 16 and 18 will bemoved, the toe 30 will engage shoulder 6i, rack 6| will move to theleft, segmental gear 60 will turn tube 52 clockwise, and the lug 54 willpush shutter release lever 56 to the right and the shutter will betripped to make an exposure. Simultaneously, the movement of rack 6|turns shaft 64 counterclockwise (Fig. 14) through the action of link 61and lever 68, so that arm IN is swung rearwardly. As this arm is alreadyin contact at II9 with interlock I I 5, the latter will be swung aboutits pivot H6 and the lug II6 will be moved forwardly away from shoulderI20 on yoke I05. Spring I22 then carries the interlock to the left asfar as permitted by slot II1. Lug II8 then rides on the smooth peripheryof disc I I0 (Fig. 6) but this disc cannot turn backwardly because oftongue II4which is engaged in shoulder I I3. Interlock II5 thus beingmoved to the left permits spring I29 to swing lever I21 and move its endI30 into notch I3I in finger release 10 as soon as the operator. removeshis finger and permits The latter cannot then be depressed again. untillever-end I30 has been moved out of notch I 3| anduntil a new frame offilm has been advanced to the exposure aparture 23.

The operator now turns the knob 90 clockwise. Gear 94 engages the firsttooth 96 of mutilated gear 96 (starting from the position of Fig. 1) andturns this'gear, carrying pitman 99 and arm IOI to the position of Fig.6. This movement turns shaft 64 clockwise, and through link 61 and lever69 carries rack 6I to the right, causing the setting lever 55 and setsthe shutter for another exposure.

As the operator continues to wind knob 90 to frame a new area of film,the film in passing onto spool I'I engages the toothed rollers 24, aspreviously described and so rotates pinions I03 and I04 which carry gearI02 in the same direction as the knob 90. It should be clearlyunderstood that there is no positive connection between the knob 90 andthe gear I02, the latter being driven only by the film F. Disc H0, beingfrictionally and not positively driven through the spring action ofclutch member I0! is carried around with gear I92 until the left side ofthe notch IE2, contacts lug H8 (Fig. 7).

Before the notch ll? engages the lug II8 the mutilated gear 95 has beenrotated to a position where the last tooth 96* thereof passes out ofmesh with gear 92, and that the latter may then continue its rotationwithout further affecting gear 98. Ihis permits a full frame of film tobe wound on. At this time pin I26 abuts a prong I33 on interlock H5 andthus gear is stopped, the parts then being in the relative positionsindicated in Fig. 7. Continued movement of the film v(by turning knobcauses the side of notch H2 to push interlock H5 far enough to the rightso that spring I22 forces lug M8 back toward yoke m5 and it isthenlatched at shoulder 52% and cannot again move to the free position.During this last slight movement of the interlock, the prong I33 passesofi from pin W6, and as the fiat end $25 of lever I23 is pressingagainst the pin I26 just at the point where said flat terminates, thecurved portion I34, of lever i23 under the action of spring I22 acts inthe nature of a cam and pushes thepin I26 forwardly, thus rotating gear96 so that the untoothed portion 98 thereof freely passes gear 94 andthe first tooth 96 engages a tooth on gear 94 and comes to rest, readyfor another cycle-of operations.

If now the number of the next film frame has not appeared in theobservation window of the camera back II (not shown) the operator maycontinue to wind film and the film will still turn gear M32, the disc H0however cannot rotate because it is then blocked by the lug I I8(Fig. 1) so the friction disc ill! will slip on the inner surface ofgear m2 as long as may be necessary to complete the winding of the filmto the next frame.

Ihe last fraction of an inch of movement of interlock M5 to engage lugH8 behind shoulder I20 causes the end I32 to push lever I21 to theright, thus freeing or unlocking finger release 10 for the nextexposure.

From the above it will be noted that the operator cannot trip theshutter until after he has wound most of the next film frame onto thereceiving spool. After starting to wind he will of course continue untilthe next number appears in the observation window. As the winding of thefilm sets the shutter, the camera is then ready for the next exposurewithout any further thought or action. When the next exposure is made,the shutter cannot be tripped again until more film is wound onto thereceiving spool. Double or blank exposures are thus rendered impossible,as the film cannotbe advanced from one frame to another until theshutter has been tripped.

When the operator inserts a fresh supply spool of film and starts towind it onto the receiving spool, a much greater length than one framemust be wound before the numeral 1 appears in the observation window. Itis therefore, necessary to render the interlock inoperative until armI46 at the'bottom of pivot MI is swung so that a lug M1 on said armstrikes the rear edge of prong I33 on the interlock I I5 and forces thelatter forward, removing lug ill! from notch H2 and permitting theoperator to wind on the required amount of film to bring the first ofthe group of numerals l on the backing paper into the observationwindow. Then if the operator depresses knob I43 again and moves arm I40forwardly, the lug Ill is withdrawn from prong I33 and the lug H8 maysnap back into notch II2 under the pull of spring I22 as soon as windingknob 90 is given another quarterturn. This last movement will carry thefilm the necessary distance to correctly place No. 1 frame, and thecamera is then ready for the first exposure.

An exposure counter is also incorporated in the structure as illustratedherewith, and may comprise a numbered disc I49 (Fig. 1) the figures onwhich may be read through a window I50 in the housing 20. A ratchet I5Iunder disc H9 is turned the space of one tooth (or one digit on discI49) by a pawl I52 (Fig. 8) mounted on the interlock H5. This pawl isindicated as made of apiece of spring wire, suitably formed to functionas both a pawl and a spring, one end being turned up to engage theteethof ratchet I5I. A holding pawl I53 may be arranged to preventreverse rotation of disc I49 and a knob I54 is provided for manualsetting of the counter.

What I claim is:

1. In a camera, the combination with a camera body, of a focusing lensmount including telescoping tubular members, a shutter including asetting lever and a release lever carried thereby, means inside thefocusing lens mount movably mounted therein and movable therewith'forsetting the shutter and tripping the shutter when moved in difierentdirections, means for moving said movably mounted member including agear segment and rack, a trigger mounted on'the camera body andmechanism for transmitting motion to the rack from the trigger.

2. In a camera, the combination with a camera body, of a focusinglensmount including telescoping tubular members, a shutter including asetting lever and a release lever carried thereby, means inside thefocusing lens mount movably mounted therein and movable therewith forsetting the shutter and tripping the shutter when moved in differentdirections, a trigger movably mounted on the camera body, means formoving said movably mounted member including a gear segment and rack,and mechanism for transmitting motion to the rack from the trigger, saidrack being of a widthgreater than the longitudinal movement of thefocusing movement of the lens mount whereby said gear segment and rackare always engaged.

3. In a camera, the combination with a camera body, of a focusing lensmount including telescoping tubular members, a shutter including asetting lever and a release lever carried thereby,

\ said movably mounted member including a gear means inside the focusinglens mount movably mounted therein and movable therewith for setting theshutter and tripping the shutter when moved in different directions. atrigger movably mounted on the camera body, means for moving segment andrack, and mechanism for transmitting motion to the rack from thetrigger, said rack having teeth extending parallel to the axis of saidobjective, said teeth being of a length greater than the possiblemovement of the focusing lens mount whereby said gear segment and rackare always engaged.

4. In a camera, the combination with a camera body, of a'focusing lensmount including telescoping tubular members, a shutter including asetting lever and a release lever carried thereby, means inside thefocusing lens mount movably mounted therein and movable therewith forsetting the shutter and tripping the shutter when moved in difierentdirections, means for moving said movably mounted member, a trigger,said means for moving said member including slidable connections betweensaid member and said trigger-whereby movement may be transmitted to, themovable member by the trigger.

5. In a photographic camera, the combination with a camera body, of amultiple tube telescopic extension the tubes of which are adapted toscrew into and out of said camera body, a between-thelens shuttermounted entirely within one of said tubular extension members andincluding a setting lever and a release lever and means for operatingthe setting and release levers mounted on and movable with the extensiontube carrying said shutter.

6. In a photographic camera, the combination with a camera body, of amultiple tube telescopic extension the tubes of which are adapted toscrew into and out of said camera body, a between-thelens shuttermounted entirely within one of said tubular extension members andincluding a setting lever and a release lever and means for operatingthe setting and release levers mounted on and movable with the extensiontube carrying said shutter, shutter operating members on the camera, anda pair of relatively slidable connecting members for connecting theshutter operating members on the camera to the shutter operating meansinside the tubular extension member.

7. In a photographic camera, the combination with a camera body, of amultiple tube telescopic extension, the tubes of which are adapted toscrew into and out of the camera body to and from a picture-takingposition, a pin carried by a tubular member, a slotted guideway carriedby the camera body, said pin and slot guiding a tube of the telescopicextension relative to the camera body to prevent turning movementthereof, a guiding edge fixed relative to the camera body, a shuttercarried by the tubular member carrying the pin, a shutter actuatormovably carried in said tubular member, and a lug on the shutteractuator positioned to engage the guiding edge fixed relative to thecamera body to prevent actuation of said shutter actuator when themultiple tube extension is moved from a picture-takthe camera body, saidpin and slot guiding a tube of the telescopic extension relative to thecamera body to prevent turning movement thereof, a cam on the camera, ashutter mounted on said tubular member carrying the pin, a shutteractuator from a picture-taking position, a pin carried by a tubularmember, a slotted guideway carried by the camera body, said pin and slotguiding a tube of the telescopic extension relative to the camera bodyto prevent turning movement thereof, a cam on the slotted memberincluding a straight edge and an offset edge, a shutter mounted in theguided tubular member, a shutter actuator movably mounted on the guidedtubular extension and including a part positioned to contact with thecam in such a manner that movement of the actuator is prevented whensaid actuator lies against the straight edge of the cam and so that theactuator may move when the part lies opposite the offset edge of thecam.

10. In a photographic camera, the combination with a camera body, of amultiple tube telescopic extension, the tubes of which are adapted toscrew into and out of the camera body to and from a picture-takingposition, a pin carried by a tubular member, a slotted guideway carriedby the camera body, said pin and slot guiding a tube of the telescopicextension relative to the camera body .to prevent turning movementthereof, a straight edge on the slotted member, a shutter mounted on theguided tubular member, a shutto screw into and out of the camera body toand from a picture-taking position, a pin carried by a tubular member, aslotted guideway carried by the camera body, said pin and slot guiding atube of the telescopic extension relative to the camera body to preventturning movement thereof, a

straight edge on the slotted member, a shutter mounted on the guidedtubular member, a shutter actuator movably mounted on the guided tubularmember and including a part movable towards said straight edge, saidstraight edge being adapted to block movement of th actuator, thestraight edge being of such lengt that movement of the actuator may takeplace when the tubular extension is moved to a picture-taking position,and a cam carried by the straight edge for engaging the part of theactuator'adapted to engage the straight edge to insure positioning theactuator against the straight edge as the telescoping parts are movedfrom a picture-taking position.

12. In a photographic camera, the combination with a camera body, of amultiple tube telethe can movement thereof, a shutter totally enclosedby the guided tube, a shutter actuator movably mounted on the guidedtube for oscillatory movement relatively thereto, and means carried bythe camera body and included in the means for guiding the guided tube"positioned to prevent oscillatory mogement oi the shutter actuator whenthe multiple tube extension is moved from a picture-taking position.

13. In a photographic camera, the combination with a camera body, of amultiple tube telescopic extension, the tubes of which may move relativeto the camera body to and from a picture-taking position, meansforguiding one tube i ative to the camera body to prevent turningmovement thereof, a shutter totally enclosed by the guided tube, ashutter actuator movably mounted on the guided tube for oscillatorymovement relatively thereto, a gear segment ried by the actuator, aslidably mounted rack elongated teeth meshing with the gear torment,said siidable mount being carried by are body, a iinkage for moving saidrack the camera body, and a trigger ex- 5 rough the camera body formoving the r a photographic camera, the combination a camera body, of amultiple tube tel'escopic extension, the tubes of which may moverelative to the camera body to an from a pictum-taking position, meansfor guiding one tube relative to the camera body to prevent turningmovement thereof, a shutter totally enclosed by carried the guided tube,a shutter actuator movably mounted on the guided tube, for oscillatorymovement relatively thereto, a gear segment carried by the actuator, aslidably mounted rack having elongated teeth meshing with the gearsegment, said slidable mount being carried by the camera body, a linkagefor moving said rack carried 'by the camera body, a trigger extendingoutside the camera body connected to said operating linkage, and meansfor controlling movement of the oscillatable shutter actuator inaccordance with the position of the tubular extensions.

15. In a photographic camera,. the combination with a camera body, of amultiple tube telescopic extension, the tubes of which may move relativeto the camera body to and from a picture-taking position, means forguiding one tube relative to the camera body to prevent turning.movement thereof, a shutter totally enclosed by the guided tube, ashutter actuator movably mounted on the guided tube for oscillatorymovement relatively thereto, a gear segment carried by the actuator, aslidably mounted rack having elongated teeth meshing with the gearsegment, said slidable mount being carried by the camera body; a linkagefor moving said rack carried by the camera body, a trigger extendingoutside the camera body connected to said operating linkage, and meansfor controlling movement of the oscillatable shutter actuator inaccordance with the position of the tubular extensions, said meanscomprising a blocking member fixedly carried relative to the camera bodyand a member carried by the oscillatable mem- ,ber positioned tocooperate therewith.

JOSEPH MIHALYI.

